High Efficiency Speaker Asylum

RE: Hey Altec A-7 users: what frequency do you crossover at?

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In Reply to: RE: Hey Altec A-7 users: what frequency do you crossover at? posted by LineArrayNut on August 31, 2007 at 09:15:22

If you do a web consensus, it seems many prefer approximately 700 to 800hz for an A7-500 even though Altec typically set these up for 500hz second order. It also really depends on the HF horn/driver combo and woofers you are using.

Previously I've played with A7-500 that had 416A's and 511b/802D horns and they were crossed over at 500hz. It never did sound quite right to me but these were the Magnificents so the bass bin is upside down and the horn was in the bass port. I think moving the horns apart like that hurts the integration of the 2 drivers but that's just speculation on my part. There was no point in trying a higher crossover point for that setup IMO.

I'm now setting up a pair of proper theater A7's with 416-8C and 511B horns on top and will try 500 to 900 hz using a Rane variable crossover to determine what sounds best to me. I'll be surprised if I don't end up setting the 511b horns aside and build a diy horn for the 802 drivers.

I'd suggest you do the same experimentation since you also have active crossovers it's easy to determine what sounds best for your system and environment.

-Ed

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